To shorten the operating distance to be required for switching a contact, and to sufficiently push a contact spring even in the case where burning is gradually generated with passing of operating time by driving two contact springs, which are operated by one slider, so that each contact thereof is moved in the directions opposite to each other for switching.
U-shaped contact springs 2, 3 are supported by a case 4, and each projecting terminal thereof functions as a terminal, An energy converter 8 made of the ferroelectric piezoelectric ceramics is fixed to one leg part of a web of a slider 7 to be fixed to the contact spring 2, and a contact spring 3 is fixed to the other leg thereof, and a lower ends thereof are pinched by a contact base 2. Since the converter 8 is elastically deformed by excitation of the converter 8 and bent right side, the slider 7 is slid right, and the spring 2 is elastically bent right side. The spring 3 is supported between two supporting members 11, of which upper ends are fixed to the case 4, it is elastically deformed left, and both the contact pieces 5, 6 contact with each other. Consequently, remarkably short sliding stroke of the springs 2, 3 can be obtained.
JENDRITZA D J
JANOCHA HARTMUT
BINNIG HORST
